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Grade N7M Nickel vs. ISO-WD32250 Magnesium

Grade N7M nickel belongs to the nickel alloys classification, while ISO-WD32250 magnesium belongs to the magnesium alloys. There are 25 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is grade N7M nickel and the bottom bar is ISO-WD32250 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
45
Elongation at Break, % 22
4.5 to 8.6
Fatigue Strength, MPa 190
170 to 210
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 85
17
Tensile Strength: Ultimate (UTS), MPa 590
310 to 330
Tensile Strength: Yield (Proof), MPa 310
240 to 290

Thermal Properties

Latent Heat of Fusion, J/g 320
340
Maximum Temperature: Mechanical, °C 900
120
Melting Completion (Liquidus), °C 1650
600
Melting Onset (Solidus), °C 1590
550
Specific Heat Capacity, J/kg-K 390
980
Thermal Expansion, µm/m-K 9.9
26

Otherwise Unclassified Properties

Base Metal Price, % relative 75
13
Density, g/cm3 9.3
1.8
Embodied Carbon, kg CO2/kg material 16
24
Embodied Energy, MJ/kg 200
160
Embodied Water, L/kg 270
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
14 to 26
Resilience: Unit (Modulus of Resilience), kJ/m3 220
630 to 930
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 22
67
Strength to Weight: Axial, points 18
49 to 51
Strength to Weight: Bending, points 17
58 to 60
Thermal Shock Resistance, points 19
19 to 20

Alloy Composition

Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 0 to 1.0
0
Iron (Fe), % 0 to 3.0
0
Magnesium (Mg), % 0
94.9 to 97.1
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 30 to 33
0
Nickel (Ni), % 60.9 to 70
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
2.5 to 4.0
Zirconium (Zr), % 0
0.45 to 0.8
Residuals, % 0
0 to 0.3